Surface magnetic properties and domains observation in as-quenched and annealed FeNbB ribbons

The longitudinal magneto-optical Kerr effect (MOKE) combined with the magneto-optical microscopy is used to investigate the surface magnetic anisotropy and the domain behavior in as-quenched (AQ) and strain-annealed (SA) FeNbB ribbons. X-ray diffraction, conversion electron Mössbauer spectroscopy (C...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2010-05, Vol.322 (9), p.1523-1526
Hauptverfasser: Životský, O., Postava, K., Kraus, L., Hrabovská, K., Hendrych, A., Pištora, J.
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container_end_page 1526
container_issue 9
container_start_page 1523
container_title Journal of magnetism and magnetic materials
container_volume 322
creator Životský, O.
Postava, K.
Kraus, L.
Hrabovská, K.
Hendrych, A.
Pištora, J.
description The longitudinal magneto-optical Kerr effect (MOKE) combined with the magneto-optical microscopy is used to investigate the surface magnetic anisotropy and the domain behavior in as-quenched (AQ) and strain-annealed (SA) FeNbB ribbons. X-ray diffraction, conversion electron Mössbauer spectroscopy (CEMS), and scanning electron microscopy (SEM) confirmed the existence of approximately 1.3 μ m thick magnetically harder layer on the ribbon air side, consisting of crystallites embedded in an amorphous matrix. The underneath bulk phase is amorphous and magnetically soft. Residual anisotropies and the domain patterns (wide in-plane domains with 180 ∘ walls and narrow fingerprint domains) corresponding to amorphous phase are mainly caused by the internal stresses originating from the rapid quenching process. In the surface crystalline phase they are gradually overlapped by strip domains with magnetization directions almost perpendicular to the ribbon axis. The anisotropy changes caused by additional annealing and straining of the samples are shown and discussed in detail.
doi_str_mv 10.1016/j.jmmm.2009.10.060
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subjects Amorphous and nanocrystalline ribbon
Anisotropy
Annealing
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Crystallites
Exact sciences and technology
Fingerprints
Magnetic anisotropy
Magnetic domain
Magnetic properties and materials
Magnetic properties of surface, thin films and multilayers
Magnetization
Magneto-optic Kerr effect
Mathematical analysis
Physics
Ribbons
Scanning electron microscopy
Surface magnetism
title Surface magnetic properties and domains observation in as-quenched and annealed FeNbB ribbons
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